1200KM / detection
T1407 Download New Code at Runtime — Detection Rules
Detection workspace for T1407 Download New Code at Runtime: 0 Sigma sources, 0 Atlas concepts and 0 anomaly models. No live detection validation.
Source-backed rule directory
No reviewed association in this snapshot.
Atlas deterministic concepts
No exact concept selected.
Anomaly models
No exact Atlas model in this snapshot.
ATT&CK analytic guidance
DET0618 Detection of Download New Code at Runtime
AN1677 Analytic 1677
From the defender’s view: an app retrieves opaque code (DEX/SO/JAR/JS) over the network or IPC, writes it into an app-writable path, optionally performs verification-bypass behaviors (reflection, addJavascriptInterface exposure, or execmem friction), and then loads/executes that code via DexClassLoader/PathClassLoader, dlopen, or WebView bridge invocation within a short window. The analytic correlates Network Content → File Creation/Modification → OS API Execution (loader/syscall/SELinux friction) → Module Load (DexClassLoader/dlopen) and, for WebView paths, Application Log signals of JavaScript interface attachment.
AN1678 Analytic 1678
From the defender’s view: a sandboxed app retrieves code-like content (JS/Mach-O/bundles), writes it to container tmp/Caches, performs memory permission changes (RW→RX/RWX) or directly loads via dyld/dlopen from writable paths, sometimes preceded by 3rd-party hotpatch frameworks (e.g., JSPatch-like behavior) or script engine evaluation. The analytic correlates Network Content → File Creation → OS API Execution (memory permission change) → Module Load (dyld/dlopen) and/or Process Access (codesign validation touches), with optional scripting engine events.
Connected ecosystem references
Linked tags
Simulation, tools and telemetry
No reviewed association in this snapshot.
Existing anomaly research
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.